Effect of innovative finishing operations on the tribological performance of steel 27MnCr5

Transmission shafts used in the automotive sector must have a good tribological performance, and therefore an enhanced surface integrity. This paper aims to study effect of eco-friendly innovative finishing operations (belt finishing, cryogenic grinding dry grinding) on integrity performance steel grade 27MnCr5, compare behavior components produced by conventional wet process. For that purpose, total seven conditions were analysed: as reference, two conditions, hard turning+belt conditions. The (roughness, residual stresses, hardness microstructural defects) samples was assessed. Finally, step-loading test method determine scuffing resistance samples. Tested led higher than grinding. Results demonstrate roughness leads resistance, while stresses is not significant.